Caramelized Onion Grilled Cheese Recipe

Caramelized Onion Grilled Cheese

• Difficulty: Easy
• Servings: 2
• Nutritional Information Per Serving (Serving size: 1 of 2 servings): Calories 550, Total Fat 34 g, Saturated Fat 19 g, Carbohydrates 44 g, Dietary Fiber 3 g, Sugar 3 g, Protein 18 g, Cholesterol 122 mg, Sodium 648 mg
• Total Time: 35 minutes
• Active Time: 35 minutes

Elevate your classic grilled cheese into an irresistible masterpiece! Imagine thick, buttery brioche slices stuffed with a trio of melty cheeses, fragrant fresh herbs, a bubbly splash of prosecco, zesty Dijon mustard, and a rich caramelized onion spread channeling French onion soup's savory magic. One bite, and you'll be hookedthis gourmet sandwich is pure comfort food bliss!

• 3 tablespoons unsalted butter, softened
• 1 small yellow onion, thinly sliced
• 1 teaspoon fresh thyme leaves, finely chopped
• Kosher salt and freshly cracked black pepper
• 1 tablespoon plus 1 teaspoon Dijon mustard
• 1/4 cup shredded sharp Cheddar cheese
• 1/4 cup shredded Gruyere cheese
• 1/4 cup diced Robiola cheese
• 1 tablespoon prosecco
• 2 teaspoons fresh parsley, chopped
• 1 clove garlic, minced
• Four slices of brioche, each about 1 inch thick

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1. In a medium skillet over medium heat, melt 1 tablespoon of butter. Add the thinly sliced onions, then sprinkle with thyme, 1/2 teaspoon salt, and a few cracks of black pepper. Cook, stirring occasionally, until the onions become tender and golden brown, about 20 minutes. Turn off the heat and stir in 1 tablespoon Dijon mustard and 1 tablespoon water to coat the onions evenly. Transfer the mixture to a bowl and set aside.
2. Preheat a griddle over medium heat.
3. In a food processor, combine the Cheddar, Gruyere, Robiola, prosecco, parsley, garlic, and the remaining 1 teaspoon Dijon mustard. Pulse until the mixture is well combined but still slightly chunky and spreadable. Spread the cheese blend evenly on one side of each slice of brioche. Spread the onion mixture over two of the slices, then top with the other two slices so the cheese sides face inward. Butter the outside of each sandwich evenly and season with salt and pepper.
4. Place the sandwiches on the griddle and cook over medium heat until the bread is golden brown on one side, about 5 minutes. Flip carefully and cook another 5 minutes, or until the cheese melts and the exterior is crispy and browned.